/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraComponent.h
void SetParameterOverride ( const [FNiagaraVariableBase](API\Plugins\Niagara\FNiagaraVariableBase) & InKey, const [FNiagaraVariant](API\Plugins\Niagara\FNiagaraVariant) & InValue )